Question

Standing chlorine water turns yellow.
A.True
B.False

Answer 1

Hint: Chlorine is the element of the halogen group. It is a highly reactive element. As we know that sunlight plays a big role in chemical reactions. It changes the substance state and color too. The exchange of electrons produces a new product in the chemical reaction.

Complete step by step answer:
As we know that chlorine is easily soluble in water. When it dissolves in water it gives a smell and yellow color. Because chlorine has yellow, so the water becomes yellow which is chlorine water.
But, we are very familiar with that sunlight helps in many chemical reactions like photosynthesis.
Here, when chlorine water stands in sunlight it loses its yellow color. Because it forms hydrochloric acid and hypochlorous acid.
Hydrochloric acid - $HCl$
Hypochlorous acid - $HOCl$
$C{l_2} + {H_2}O \to HOCl + HCl$
Therefore, we got that chlorine water does not turn water.
Hence, it is false here.

Additional Information: Chlorine has an atomic number of $17$, and its symbol is $Cl$. It is also a strong oxidizing agent. It has the third-highest electronegativity according to the Pauling scale, and it also has the highest electron affinity. Water is an odorless, tasteless, and colorless chemical inorganic substance. Its chemical formula is ${H_2}O$. It contains one oxygen and two hydrogens.

Note:
Periodic table has a total of $118$ elements. And the periodic table is arranged based on the atomic number. It is denoted by $Z$. The atomic number is the number of protons found in the nucleus.
Electron affinity-When an electron is attached to a neutral atom, and released energy is known as electron affinity.